CVE-2026-57926 Code injection in YouTrack
Prototype pollution in the websandbox bridge allows attackers to execute arbitrary code or escalate privileges in JetBrains YouTrack.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-57926?
CVE-2026-57926 is a low-severity code injection vulnerability in Jetbrains Youtrack, published on 26 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
In JetBrains YouTrack before 2026.2.16593 the websandbox bridge was vulnerable to a prototype pollution attack
Weakness: CWE-1321
Which versions are affected by CVE-2026-57926?
It affects 1 product.
Products include Jetbrains Youtrack.
How do I fix CVE-2026-57926?
No fix has been published for CVE-2026-57926 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-57926 being exploited?
There is no known exploitation of CVE-2026-57926 in the wild and no public exploit code.
Other vulnerabilities in Jetbrains Youtrack
Sources
Also known as GHSA-pwj4-f48q-v2h2.